Process for the preparation of planographic printing forms using

Details Process for the preparation of planographic printing forms using Process for the preparation of planographic printing forms using

1977-02-22

1977-12-20

Welsh, John D.

Gas separation: apparatus

Electric field separation apparatus

With means to add charged solid or liquid particles to...

96 86R, 96 363, G03F 708

Patent

active

040639495

ABSTRACT:
This invention relates to an improvement in the process for the preparation of a planographic printing form in which a recording material comprising a support of anodically oxidized aluminum and a recording layer thereon is imagewise irradiated with a laser beam, thereby rendering the irradiated portions of the recording layer oleophilic and/or insoluble, and the non-irradiated portions of the recording layer are then removed, where necessary, by washing with a developer liquid, the improvement comprising an oxide layer on said support weighing at least 3 grams per square meter.

REFERENCES:
patent: 3664737 (1972-05-01), Lipp
Chemical Abst., vol. 65/1666d, vol. 68, col. 100673u.

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